196 Transactions.—Zoology. i 
The abdomen exhibits a curve almost continuous and regular, broken 
only by very small lobes except in the middle, where there is a deepish 
depression with a large lobe on each side. Between the lobes are scaly 
serrated hairs, some of which are pretty long. 
There are five groups of spinnerets of which the middle has 7 to 8 
openings, the two upper-side ones 14 to 20, the two lower 20 to 25. 
There are a great number of single spinnerets, a few oval or circular, 
the majority oblong. They are placed in curved lines arching round the 
pygidium, each arch lining the groove of a corrugation, and are visible on 
the sides of the body nearly to a level with the rostrum. 
The male insect is very minute and difficult to find. I succeeded in 
procuring one specimen, though not in good order. I could observe that 
the antenns were short and the tibiæ excessively large. 
Plate V., fig. 4a, is the puparium ; fig. 4b, the adult female; fig. 4c, the 
pygidium. 
4. Mytilaspis drimydis, sp. nov. 
Plate V., fig. 5. 
I have found this species on a great many native plants, but more often 
perhaps on Drimys colorata, whence I give it its name. 
The puparium is straight, long and narrow, but not so much so as in 
M. cordylinidis. Average length 41, inch; breadth 4L. inch; colour generally 
& dirty white, sometimes brown, yellow at the end with the discarded 
pellicles, which are oval, narrowing somewhat at the tip. 
The adult female is of a dull red colour, about twice as long as broad ; 
the widest part is about two-thirds of the length from the head. It is less 
corrugated than M. pomorum ; the head and thoracic portion of the body 
are smooth and roünd, the anterior edge not so much flattened as in M. 
cordylinidis. The remainder of the body, on the corrugations, has a row 
of short, thick, tubular bristles extending down the edge as far as the com- 
mencement of the abdominal pygidium ; these are cylindrical, some with a 
circular top, some forked, some appearing like bundles of parallel fibres. It 
is probable that they are spinnerets protruding further than is usual in 
other species. 
There are no groups of spinnerets on the abdomen, but a number of 
single ones, mostly oblong, scattered about. 
The abdomen ends in a number of very small lobes of which four are 
conspieuous in the centre. Between the lobes fine hairs. 
On the cephalic region are a few scattered spines and the two rudimentary 
antenne. 
I have no adult male, but pups showing long antennæ, a very long 
body, short wings and the usual abdominal spike peculiar to the Diaspide. 
